Scraemachk, an ancient and villainous dark hunter notorious for preying on stray matoran; entering their minds, engulfing their bodies, and feeding of their life source till they're nothing more than empty shells of the beings they once were...

Ornos, a miner, broke into Scraemachk's prison while mining deep underground. He now steals masks from above ground for Sraemachk,who stays underground regenerating old powers and gaining new ones from the masks brought below...